Stabilizer for aeroplanes.



Wiimeoom H. G. FISK.

STABILIZEB. FOR AEROPLANES.

APPLIOATION FILED ran. a, 1913.

1,072,710, I V Patented Sept.9,1913.

Suva H301,

COLUMBIA PLANOGRAPH (20., WASHINGTON, n. c.

ii i s HENRY C. FISK, SEIIJQJFIEORD,v CONNECTICUT.

STABILIZER FOR AEROIPLANES.

Specification of Letters Patent.

Patented Sept. 9 1913.

Application filed February a, 1913. Serial no. 745,984.

To all whom it may concern:

Be it known that I, HENRY O. FISK a citizen of the United States, residing at Stafford, in the county of Tolland and State of Connecticut, have invented certain new and useful Improvements in Stabilizers for 'Aeroplanes, of which the following is a whether the same is a monoplane, a biplane or other construction, and which attachment will operate to keep the machine to which it is attached in its proper position'and prevent overturning. I

A further object of my invention is to provide a stabilizer which, should the machinebe partly overturned for any reason, will, cause the same in its descent to right, consequently preventing the dangerous falls which now occur, caused by the machine being tipped either forwardly, backwardly, or sidewise at too great an angle.

With the foregoing and other objects in view my invention comprises broadly the placing of a plane, preferably of circular or similar outline, which plane is dished, above the supporting plane or planes of the machine.

My invention further consists in certain constructions, combinations and arrangements of parts, the preferred form of which 1 will be first described in connection with the accompanying drawings and then the invention particularly pointed out in the appended claims. I

Referring to the drawings wherein the same part is designated by the same reference numeral wherever it occurs, Figure 1 1s a front elevation of an outlme of a biplane with my invention attached thereto, the same being shown in section; Fig. 21s

a central section taken at right angles to Fig. l. v V

5 designates an aeroplane which is shown as being of the biplane type.

It is to be un- V derstood however that the particular type rights 6 are rigidly held against the strains imposed thereon. Secured to the upper ends of the uprights 6 is my stabilizing plane 8. This plane can be constructed out of any suitable materials and in any suitable way, the materials and particular manner of con structing this plane forming no part of my invention. This plane is dished and in the form shown has the fiat central portion 9 surrounded by the upwardly and outwardly curved portion 10, the essential part of this stabilizing plane being the upwardly and outwardly curving portion 10, and constructing the plane either circular or oval in form. As this stabilizing plane is located at a distance above the supporting planes and because of the upwardly and outwardly curving sides thereof, it will always tend to keep the machine on an even keel and when the. machine departs from this position to return it thereto. V

Experlments wlth my construction have shown that my stabilizer will return an aeroplane to an even keel no matter what positionthe aeroplane is when it is launched into the air, provided the height at which it is launched is sufficient to give the stabilizing plane time to perform its function.

I realize that considerable variation is possible in the details of construction and arrangement of parts without departing from the spirit of my invention, and I there fore do not intend to limit myself to the specific form shown and described.

1 Having thus described my invention what I claim as new and desire to secure by Let e ters Patent is l. The combination with the supporting plane of an aeroplane, of a stabilizing plane, means for supporting the stabilizing plane above the supporting plane, said stabilizing plane having a central portion surrounded byan upwardly and outwardly extending portion.

2. The combination with the supporting plane of an aeroplane, of a stabilizing plane, means for supporting the stabilizing plane above the supporting plane, said means comprising a plurality of uprights, guys eX- tending from the uprights to the supporting plane, said stabilizing plane comprising a central portion surrounded by an upwardly and outwardly extending portion.

3. The combination with the supporting plane of an aeroplane, of a stabilizing plane, means for supporting the stabilizing plane above the supporting plane, said stabilizingplane belng of clrcular norm and zoomprismg a central portion, and an upwardly and outwardly extending portion surrounding the means for supporting the stabilizing plane above the supporting plane, said stabilizing plane-comprising a flat central portion sur- 10 rounded by an upwardly and outwardly extending curved portion. ln t o's'timonywhereof I aflix my signature i-n'presenoe of tWo Witnesses.

- "i HENRY C. FI SK.

Witnesses Joiii r E. Fisk,

FRANCIS M. PHELPS.

Copies of .this patent may be obtained for five ce-nts each, by addressing the Commissioner of Patents, Washington, D. .0 

